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CVE-2024-42111
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#IAGSYT
CVE和安全问题
openeuler-ci-bot
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2024-07-31 11:32
一、漏洞信息 漏洞编号：[CVE-2024-42111](https://nvd.nist.gov/vuln/detail/CVE-2024-42111) 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel) 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0,6.6.0 CVSS V2.0分值： BaseScore：0.0 Low Vector：CVSS：2.0/ 漏洞简述： In the Linux kernel, the following vulnerability has been resolved:btrfs: always do the basic checks for btrfs_qgroup_inherit structure[BUG]Syzbot reports the following regression detected by KASAN: BUG: KASAN: slab-out-of-bounds in btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277 Read of size 8 at addr ffff88814628ca50 by task syz-executor318/5171 CPU: 0 PID: 5171 Comm: syz-executor318 Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277 create_pending_snapshot+0x1359/0x29b0 fs/btrfs/transaction.c:1854 create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1922 btrfs_commit_transaction+0xf20/0x3740 fs/btrfs/transaction.c:2382 create_snapshot+0x6a1/0x9e0 fs/btrfs/ioctl.c:875 btrfs_mksubvol+0x58f/0x710 fs/btrfs/ioctl.c:1029 btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1075 __btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1340 btrfs_ioctl_snap_create_v2+0x1f2/0x3a0 fs/btrfs/ioctl.c:1422 btrfs_ioctl+0x99e/0xc60 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcbf1992509 RSP: 002b:00007fcbf1928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fcbf1a1f618 RCX: 00007fcbf1992509 RDX: 0000000020000280 RSI: 0000000050009417 RDI: 0000000000000003 RBP: 00007fcbf1a1f610 R08: 00007ffea1298e97 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcbf19eb660 R13: 00000000200002b8 R14: 00007fcbf19e60c0 R15: 0030656c69662f2e </TASK>And it also pinned it down to commit b5357cb268c4 ( btrfs: qgroup: do notcheck qgroup inherit if qgroup is disabled ).[CAUSE]That offending commit skips the whole qgroup inherit check if qgroup isnot enabled.But that also skips the very basic checks likenum_ref_copies/num_excl_copies and the structure size checks.Meaning if a qgroup enable/disable race is happening at the background,and we pass a btrfs_qgroup_inherit structure when the qgroup isdisabled, the check would be completely skipped.Then at the time of transaction commitment, qgroup is re-enabled andbtrfs_qgroup_inherit() is going to use the incorrect structure andcausing the above KASAN error.[FIX]Make btrfs_qgroup_check_inherit() only skip the source qgroup checks.So that even if invalid btrfs_qgroup_inherit structure is passed in, wecan still reject invalid ones no matter if qgroup is enabled or not.Furthermore we do already have an extra safety insidebtrfs_qgroup_inherit(), which would just ignore invalid qgroup sources,so even if we only skip the qgroup source check we re still safe. 漏洞公开时间：2024-07-30 16:15:03 漏洞创建时间：2024-07-31 11:32:12 漏洞详情参考链接： https://nvd.nist.gov/vuln/detail/CVE-2024-42111 <details> <summary>更多参考(点击展开)</summary> | 参考来源 | 参考链接 | 来源链接 | | ------- | -------- | -------- | | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b | | | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56 | | | suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-42111 | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-42111.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | suse_bugzilla | https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56 | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | suse_bugzilla | https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024073021-CVE-2024-42111-034c@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2301474 | | ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://git.kernel.org/linus/724d8042cef84496ddb4492dc120291f997ae26b (6.10-rc7) | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://launchpad.net/bugs/cve/CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | debian | | https://security-tracker.debian.org/tracker/CVE-2024-42111 | </details> 漏洞分析指导链接： https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md 漏洞数据来源: 其它 漏洞补丁信息： <details> <summary>详情(点击展开)</summary> | 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源 | | ------- | -------- | ------- | -------- | --------- | | linux | | https://git.kernel.org/linus/724d8042cef84496ddb4492dc120291f997ae26b | https://git.kernel.org/linus/b5357cb268c41b4e2b7383d2759fc562f5b58c33 | ubuntu | </details> 二、漏洞分析结构反馈 影响性分析说明： Reserved. openEuler评分： 3.9 Vector：CVSS：2.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L 受影响版本排查(受影响/不受影响)： 1.openEuler-20.03-LTS-SP4(4.19.90):不受影响 2.openEuler-22.03-LTS-SP1(5.10.0):不受影响 3.openEuler-22.03-LTS-SP3(5.10.0):不受影响 4.openEuler-22.03-LTS-SP4(5.10.0):不受影响 5.master(6.1.0):不受影响 6.openEuler-24.03-LTS(6.6.0):不受影响 7.openEuler-24.03-LTS-Next(6.6.0):不受影响 修复是否涉及abi变化(是/否)： 1.openEuler-20.03-LTS-SP4(4.19.90):否 2.openEuler-22.03-LTS-SP1(5.10.0):否 3.openEuler-22.03-LTS-SP3(5.10.0):否 4.master(6.1.0):否 5.openEuler-24.03-LTS(6.6.0):否 6.openEuler-24.03-LTS-Next(6.6.0):否 7.openEuler-22.03-LTS-SP4(5.10.0):否
一、漏洞信息 漏洞编号：[CVE-2024-42111](https://nvd.nist.gov/vuln/detail/CVE-2024-42111) 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel) 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0,6.6.0 CVSS V2.0分值： BaseScore：0.0 Low Vector：CVSS：2.0/ 漏洞简述： In the Linux kernel, the following vulnerability has been resolved:btrfs: always do the basic checks for btrfs_qgroup_inherit structure[BUG]Syzbot reports the following regression detected by KASAN: BUG: KASAN: slab-out-of-bounds in btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277 Read of size 8 at addr ffff88814628ca50 by task syz-executor318/5171 CPU: 0 PID: 5171 Comm: syz-executor318 Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277 create_pending_snapshot+0x1359/0x29b0 fs/btrfs/transaction.c:1854 create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1922 btrfs_commit_transaction+0xf20/0x3740 fs/btrfs/transaction.c:2382 create_snapshot+0x6a1/0x9e0 fs/btrfs/ioctl.c:875 btrfs_mksubvol+0x58f/0x710 fs/btrfs/ioctl.c:1029 btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1075 __btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1340 btrfs_ioctl_snap_create_v2+0x1f2/0x3a0 fs/btrfs/ioctl.c:1422 btrfs_ioctl+0x99e/0xc60 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcbf1992509 RSP: 002b:00007fcbf1928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fcbf1a1f618 RCX: 00007fcbf1992509 RDX: 0000000020000280 RSI: 0000000050009417 RDI: 0000000000000003 RBP: 00007fcbf1a1f610 R08: 00007ffea1298e97 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcbf19eb660 R13: 00000000200002b8 R14: 00007fcbf19e60c0 R15: 0030656c69662f2e </TASK>And it also pinned it down to commit b5357cb268c4 ( btrfs: qgroup: do notcheck qgroup inherit if qgroup is disabled ).[CAUSE]That offending commit skips the whole qgroup inherit check if qgroup isnot enabled.But that also skips the very basic checks likenum_ref_copies/num_excl_copies and the structure size checks.Meaning if a qgroup enable/disable race is happening at the background,and we pass a btrfs_qgroup_inherit structure when the qgroup isdisabled, the check would be completely skipped.Then at the time of transaction commitment, qgroup is re-enabled andbtrfs_qgroup_inherit() is going to use the incorrect structure andcausing the above KASAN error.[FIX]Make btrfs_qgroup_check_inherit() only skip the source qgroup checks.So that even if invalid btrfs_qgroup_inherit structure is passed in, wecan still reject invalid ones no matter if qgroup is enabled or not.Furthermore we do already have an extra safety insidebtrfs_qgroup_inherit(), which would just ignore invalid qgroup sources,so even if we only skip the qgroup source check we re still safe. 漏洞公开时间：2024-07-30 16:15:03 漏洞创建时间：2024-07-31 11:32:12 漏洞详情参考链接： https://nvd.nist.gov/vuln/detail/CVE-2024-42111 <details> <summary>更多参考(点击展开)</summary> | 参考来源 | 参考链接 | 来源链接 | | ------- | -------- | -------- | | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b | | | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56 | | | suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-42111 | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-42111.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | suse_bugzilla | https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56 | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | suse_bugzilla | https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b | https://bugzilla.suse.com/show_bug.cgi?id=1228506 | | redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024073021-CVE-2024-42111-034c@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2301474 | | ubuntu | https://www.cve.org/CVERecord?id=CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://git.kernel.org/linus/724d8042cef84496ddb4492dc120291f997ae26b (6.10-rc7) | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://launchpad.net/bugs/cve/CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | ubuntu | https://security-tracker.debian.org/tracker/CVE-2024-42111 | https://ubuntu.com/security/CVE-2024-42111 | | debian | | https://security-tracker.debian.org/tracker/CVE-2024-42111 | </details> 漏洞分析指导链接： https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md 漏洞数据来源: 其它 漏洞补丁信息： <details> <summary>详情(点击展开)</summary> | 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源 | | ------- | -------- | ------- | -------- | --------- | | linux | | https://git.kernel.org/linus/724d8042cef84496ddb4492dc120291f997ae26b | https://git.kernel.org/linus/b5357cb268c41b4e2b7383d2759fc562f5b58c33 | ubuntu | </details> 二、漏洞分析结构反馈 影响性分析说明： Reserved. openEuler评分： 3.9 Vector：CVSS：2.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L 受影响版本排查(受影响/不受影响)： 1.openEuler-20.03-LTS-SP4(4.19.90):不受影响 2.openEuler-22.03-LTS-SP1(5.10.0):不受影响 3.openEuler-22.03-LTS-SP3(5.10.0):不受影响 4.openEuler-22.03-LTS-SP4(5.10.0):不受影响 5.master(6.1.0):不受影响 6.openEuler-24.03-LTS(6.6.0):不受影响 7.openEuler-24.03-LTS-Next(6.6.0):不受影响 修复是否涉及abi变化(是/否)： 1.openEuler-20.03-LTS-SP4(4.19.90):否 2.openEuler-22.03-LTS-SP1(5.10.0):否 3.openEuler-22.03-LTS-SP3(5.10.0):否 4.master(6.1.0):否 5.openEuler-24.03-LTS(6.6.0):否 6.openEuler-24.03-LTS-Next(6.6.0):否 7.openEuler-22.03-LTS-SP4(5.10.0):否
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